Compare Samsung 990 EVO Plus 2TB and WD_BLACK SN7100 2TB: prices, speeds, $/TB. Which to buy in May 2026? Full spec breakdown.
Samsung 990 EVO Plus 2TB vs WD_BLACK SN7100 2TB pits two different generations against each other at 2 TB. The question isn't which is faster on paper — that's settled — it's whether the bandwidth gap shows up in your specific workload.
Hardware-wise, the Samsung 990 EVO Plus 2TB runs on Samsung's Piccolo controller — DRAM-less with PCIe 4.0/5.0 dual-mode support. The WD_BLACK SN7100 2TB pairs SanDisk's A101 controller, used in newer WD_BLACK SKUs after the SanDisk spinoff.
Price separates these two meaningfully. The WD_BLACK SN7100 2TB costs $82.50/TB versus $114.50/TB for the Samsung 990 EVO Plus 2TB — a 28% premium that needs justification in real benchmarks, not just spec-sheet bragging.
Heading to a PlayStation 5? Both drives drop into the console's M.2 bay and report identical real-world benchmarks since the PS5 caps storage at PCIe 4.0 speeds. The WD_BLACK SN7100 2TB wins this matchup on $/TB. The leap from Gen 4 to Gen 5 doubles peak throughput on paper but produces single-digit-percent improvements in game load times, OS boot, and most productivity benchmarks. The WD_BLACK SN7100 2TB is the better default unless you have a specific workload that needs the extra lanes. Heavy write workloads — video editing, RAW photo libraries, backup operations — favor the WD_BLACK SN7100 2TB's 6,900 MB/s sustained write speed. Both drives use the 2280 form factor, which is too long for Steam Deck or ROG Ally — you'd need a 2230 variant if either manufacturer offers one, or a dedicated handheld-format drive instead.
The 990 EVO Plus uniquely supports both PCIe 4.0 x4 and PCIe 5.0 x2 modes — useful flexibility if you might upgrade motherboard generations.
Pick the WD_BLACK SN7100 2TB if you value the lower retail price ($165 vs $229), and better $/TB economics ($82.50/TB).